+- ``class`` [net|vdpa] (default **net**)
+
+ Choose the mode of operation of ef100 device.
+ **net** device will work as network device and will be probed by net/sfc driver.
+ **vdpa** device will work as vdpa device and will be probed by vdpa/sfc driver.
+ If this parameter is not specified then ef100 device will operate as
+ network device.
+
+- ``switch_mode`` [legacy|switchdev] (see below for default)
+
+ In legacy mode, NIC firmware provides Ethernet virtual bridging (EVB) API
+ to configure switching inside NIC to deliver traffic to physical (PF) and
+ virtual (VF) PCI functions. PF driver is responsible to build the
+ infrastructure for VFs, and traffic goes to/from VF by default in accordance
+ with MAC address assigned, permissions and filters installed by VF drivers.
+ In switchdev mode VF traffic goes via port representor (if any) on PF, and
+ software virtual switch (for example, Open vSwitch) makes the decision.
+ Software virtual switch may install MAE rules to pass established traffic
+ flows via hardware and offload software datapath as the result.
+ Default is legacy, unless representors are specified, in which case switchdev
+ is chosen.
+
+- ``representor`` parameter [list]
+
+ Instantiate port representor Ethernet devices for specified Virtual
+ Functions list.
+
+ It is a standard parameter whose format is described in
+ :ref:`ethernet_device_standard_device_arguments`.
+